计算机辅助设计/计算机辅助制造技术在颌骨缺损修复和畸形整复中的应用

摘要

目的 探讨将计算机辅助设计/计算机辅助制造(computer-aided design/computeraided manufacturing,CAD/CAM)技术应用于颌骨缺损修复和畸形整复手术中,以提高手术的精确性和可控性. 方法 基于CT数据,采用CAD技术重建出患部骨骼模型,通过镜像得到修复模型,再利用快速成形技术制造出物理模型,在此基础上制订手术方案,并通过模型外科进行手术方案预演和置入钛板预成形. 结果 基于CAD/CAM技术制订的手术方案和预成形钛板在8例颌骨缺损修复和畸形整复手术中均取得了满意疗效. 结论 利用CAD/CAM技术可重建并制造出患部骨骼模型和镜像修复模型,对制订较为合理的颌面外科手术方案具有较大的帮助,提高手术精度的同时节省了手术时间,在复杂颌骨缺损修复和畸形整复中具有独特的优势.%Objective To apply the techniques of CAD/CAM in the repair of defects and correction of deformity on the jaw bones so as to improve the accuracy and controllability of operations.Methods With CAD techniques,3D bone model was reconstructed based on CT images.Then,a repairing model was created with mirror operation on original model.The physical models of original model and repairing model were fabricated through rapid prototyping.Based on physical models,operation plan and model surgery with pre-forming plate could be designed.Results The designed operation plan and pre-forming plate techniques of CAD/CAM were successfully applied in eight patients,with satisfactory results.Conclusions With techniques of CAD/CAM,reconstructing and fabricating the original bone model and mirror repair model are very helpful for designing operation plan for maxillofacial surgery.It also can improve the surgery accuracy and save operation time obviously.